157990108 has 12 divisors (see below), whose sum is σ = 279333712. Its totient is φ = 78180480.

The previous prime is 157990069. The next prime is 157990109. The reversal of 157990108 is 801099751.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157990109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203208 + ... + 203983.

Almost surely, 2^157990108 is an apocalyptic number.

It is an amenable number.

157990108 is a deficient number, since it is larger than the sum of its proper divisors (121343604).

157990108 is a wasteful number, since it uses less digits than its factorization.

157990108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407292 (or 407290 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 157990108 is about 12569.4116011848. The cubic root of 157990108 is about 540.6007352002.

The spelling of 157990108 in words is "one hundred fifty-seven million, nine hundred ninety thousand, one hundred eight".